PMID- 36225213 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20221014 IS - 2590-1575 (Electronic) IS - 2590-1575 (Linking) VI - 16 DP - 2022 Dec 30 TI - H(2)O(2)-induced oxidative stress improves meat tenderness by accelerating glycolysis via hypoxia-inducible factor-1alpha signaling pathway in postmortem bovine muscle. PG - 100466 LID - 10.1016/j.fochx.2022.100466 [doi] LID - 100466 AB - Reactive oxygen species (ROS) affect meat quality through multiple biochemical pathways. To investigate the effect of ROS on postmortem glycolysis and tenderness of bovine muscle, ROS content, glycolytic potential, glycolysis rate-limiting enzyme activities, expression of hypoxia-inducible factor-1alpha (HIF-1alpha), phosphatidylinositol 3-kinase (PI3K), serine-threonine kinase (AKT), phosphorylated AKT (p-AKT), and tenderness were determined in the H(2)O(2) group and control group. Results showed that the H(2)O(2) group exhibited significantly higher ROS content within 48 h, coupled with increased glycolytic potential, pH decline, hexokinase (HK), and phosphofructokinase activities (PFK) early postmortem. These were attributed to ROS-induced PI3K/AKT signaling pathway activation and resultant HIF-1alpha accumulation. Moreover, shear force in the H(2)O(2) group reached the peak 12 h earlier and decreased obviously after 24 h, accompanied by a significantly higher myofibril fragmentation index (MFI). These findings suggested that ROS drive HIF-1alpha accumulation by activating PI3K/AKT signaling pathway, thereby accelerating glycolysis and tenderization of postmortem bovine muscle. CI - (c) 2022 The Author(s). FAU - Chen, Cheng AU - Chen C AD - College of Food Science and Engineering, Gansu Agricultural University, Lanzhou 730070, China. FAU - Guo, Zhaobin AU - Guo Z AD - College of Food Science and Engineering, Gansu Agricultural University, Lanzhou 730070, China. FAU - Shi, Xixiong AU - Shi X AD - College of Food Science and Engineering, Gansu Agricultural University, Lanzhou 730070, China. FAU - Guo, Yuxuan AU - Guo Y AD - College of Food Science and Engineering, Gansu Agricultural University, Lanzhou 730070, China. FAU - Ma, Guoyuan AU - Ma G AD - College of Food Science and Engineering, Gansu Agricultural University, Lanzhou 730070, China. FAU - Ma, Jibing AU - Ma J AD - College of Food Science and Engineering, Gansu Agricultural University, Lanzhou 730070, China. FAU - Yu, Qunli AU - Yu Q AD - College of Food Science and Engineering, Gansu Agricultural University, Lanzhou 730070, China. LA - eng PT - Journal Article DEP - 20221004 PL - Netherlands TA - Food Chem X JT - Food chemistry: X JID - 101751436 PMC - PMC9550526 OTO - NOTNLM OT - Bovine muscle OT - Glycolysis OT - Hypoxia-inducible factor-1alpha OT - Reactive oxygen species OT - Signaling pathway OT - Tenderness COIS- The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper. EDAT- 2022/10/14 06:00 MHDA- 2022/10/14 06:01 PMCR- 2022/10/04 CRDT- 2022/10/13 02:25 PHST- 2022/05/16 00:00 [received] PHST- 2022/09/28 00:00 [revised] PHST- 2022/10/02 00:00 [accepted] PHST- 2022/10/13 02:25 [entrez] PHST- 2022/10/14 06:00 [pubmed] PHST- 2022/10/14 06:01 [medline] PHST- 2022/10/04 00:00 [pmc-release] AID - S2590-1575(22)00264-4 [pii] AID - 100466 [pii] AID - 10.1016/j.fochx.2022.100466 [doi] PST - epublish SO - Food Chem X. 2022 Oct 4;16:100466. doi: 10.1016/j.fochx.2022.100466. eCollection 2022 Dec 30.